Unveiled in 2002, the Patek Philippe Celestial stands as one of the most unusual and poetic complications of modern watchmaking that redefined what was possible in haute horlogerie. Inspired by the celestial canopy from the legendary Sky Moon Tourbillon ref. 5002, the Celestial first appeared in platinum, followed by an exclusive two‑year production in yellow gold between 2007 and 2009.

Across its dial, the night sky of the Northern Hemisphere slowly rotates counterclockwise, charting the apparent motion of the stars in relation to the meridian passage of Sirius. At the same time, the complication indicates both the meridian passage of the moon and its phases, while two hollowed central hands in white track mean solar hours and minutes on a Roman numeral scale.

The present factory single-sealed ref. 5102J was brand new and freshly unsealed from factory double-sealed condition on 4 September 2025 for the purpose of verifying its serial numbers. Its yellow gold case has developed a beautiful patina and adorned along its flanks with finely engraved Calatrava crosses. Known examples in this configuration remain exceedingly rare, with this watch representing only the 25th example to surface publicly.